Effects of Organic Selenium and Zinc on the Aging Process of Laying Hens

The current experiment was conducted to investigate the application effects of selenium conjugated to insect protein (SCIP) in the production of selenium-enriched eggs. A total of 450 laying hens were randomly assigned to five dietary groups, each group consisting of six replicates. Hens in the control group received a diet without selenium supplementation, whereas hens in the other four groups received diets supplemented with either 1, 2, 5, or 10 mg/kg of selenium from SCIP. The productive performance, egg quality, antioxidant and immune capacity, biochemical indices, intestinal morphology, and oviduct health of laying hens were evaluated. The results showed that the supplementation of organic selenium provided by SCIP in the diets of laying hens enhanced performance and egg quality without any toxicity effect, even at the 10 mg/kg inclusion level. A level of 2 mg/kg of selenium provided by SCIP in diets tentatively improved the serum antioxidant and immune capacity, intestinal development, and oviduct health of laying hens in a conspicuous manner. Hence, the biosafety and positive effects of SCIP as a feed additive supplement in laying hens’ diet have been demonstrated with the enhanced production of safe and selenium-enriched eggs.

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Influence of Vitamin E and Organic Selenium Supplementation on Antioxidant Enzymes Activities in Blood and Egg Samples of Laying Hens

Journal of the Institute of Science and Technology ◽

10.21597/jist.544969 ◽

2020 ◽

pp. 694-701

Author(s):

Cihangir TİMUR ◽

Necati UTLU

Keyword(s):

Antioxidant Enzymes ◽

Vitamin E ◽

Laying Hens ◽

Selenium Supplementation ◽

Enzymes Activities ◽

Organic Selenium ◽

Antioxidant Enzymes Activities

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The Effect of Vitamin E and Organic Selenium Supplementation into Diet of Laying Hens on Some Hormones in Serum

Journal of the Institute of Science and Technology ◽

10.21597/jist.547660 ◽

2020 ◽

pp. 677-683

Author(s):

Şeyda Kurt ◽

Necati UTLU

Keyword(s):

Vitamin E ◽

Laying Hens ◽

Selenium Supplementation ◽

Organic Selenium

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Effects of Dietary Selenium Source and Storage on Internal Quality of Eggs

Acta Veterinaria Brno ◽

10.2754/avb200978020219 ◽

2009 ◽

Vol 78 (2) ◽

pp. 219-222 ◽

Cited By ~ 12

Author(s):

Gordana Kralik ◽

Zlata Gajčević ◽

Pavel Suchý ◽

Eva Straková ◽

Danica Hanžek

Keyword(s):

Sodium Selenite ◽

Laying Hens ◽

Selenium Concentration ◽

Internal Quality ◽

Control Group ◽

Limiting Factor ◽

Organic Selenium ◽

Inorganic Selenium ◽

And Storage

A 4-week experiment was carried out on 360 laying hens of the Hy Line Brown hybrid. Laying hens were divided into three groups (C, E1 and E2) with 120 hens in each group and kept in 24 cages. Hens were fed layer diets containing 18% of crude protein and 11.60 MJ ME. Hens in the control group C were fed diets that contained 0.2 mg/kg of inorganic selenium (sodium selenite). Experimental groups E1 and E2 were given diets with increased concentrations of selenium as follows: E1 = 0.4 mg/kg of selenium (sodium selenite), E2 = 0.4 mg/kg of organic selenium (Sel-Plex). Selenium concentration in diets affected significantly the content of selenium in albumen (P < 0.001) and yolk (P < 0.05). The highest concentration of selenium was determined in albumen and yolk of eggs produced in group E2 (345 ng/g and 783 ng/g, respectively), then in eggs of group E1 (230 ng/g and 757 ng/g, respectively), and group C had the lowest concentration of selenium in albumen and yolk (181 ng/g and 573 ng/g, respectively). After 28 days of storage at 4 °C, the eggs containing organic selenium had more freshness (VN: C = 32.9, E1 = 2.60, E2 = 2.11). It was concluded that higher concentration of organic selenium in eggs was a limiting factor in metabolic processes, which positively affected the indicators of egg freshness.

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Effect of Addition of Selenium-Enriched Bean Sprouts Powder in Egg Laying Hen Feed

International Journal of Scientific Research in Science Engineering and Technology ◽

10.32628/ijsrset218319 ◽

2021 ◽

pp. 121-128

Author(s):

Myongdok Im ◽

Hakchan Oh ◽

Yongchol Ri ◽

Kuangchol Kim ◽

Dongchol Jong ◽

...

Keyword(s):

Production Process ◽

Feed Intake ◽

Laying Hens ◽

Basal Diet ◽

Egg Laying ◽

Selenium Content ◽

Egg Weight ◽

Organic Selenium ◽

Laying Performance ◽

Bean Sprouts

Although selenium was considered an essential trace element in the early 1970s, it is now widely used as a biological effect, and research projects are also actively underway. In the production process of selenium-enriched eggs that can meet people's demand for selenium, this article specifically analyzed the effects of different levels of selenium-enriched bean sprouts powder on the laying performance and egg quality of laying hens. First of all, adding selenium-enriched bean sprouts powder(a kind of organic selenium) to the basal diet fed for a long time(20weeks) will affect the egg laying rate and feed intake, egg weight, egg shape index, and eggshell strength, thickness of eggshell. Next, we analyzed the accumulation of selenium in eggs, breast muscles, liver, skin and kidneys after feeding organic selenium. Results when 15~22.5g/kg selenium-enriched bean sprouts powder(selenium content 40mg/kg) was added to the basal diet fed, the egg laying rate, feed intake, egg weight, eggshell strength and eggshell thickness respectively increased by 100.6~102.9%, 101.3~102.3%, 117.1~117.6% and 105.6~108.3%, and the selenium content in eggs increased by 197.7~206.9%. Selenium is obviously deposited on the eggs, breast muscles and skin of laying hens. Therefore, in the production process of selenium-enriched eggs, adding selenium-enriched bean sprouts powder not only increased the production efficiency of eggs, but also increased double the selenium content in eggs. From the 15th day of the laying test, selenium-enriched eggs can be obtained.

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Effects of Selenium Conjugated to Insect Protein on Pharmacokinetics of Florfenicol and Enrofloxacin in Laying Hens

Frontiers in Veterinary Science ◽

10.3389/fvets.2021.745565 ◽

2021 ◽

Vol 8 ◽

Author(s):

Kai Qiu ◽

Uchechukwu Edna Obianwuna ◽

Jing Wang ◽

Hai-jun Zhang ◽

Guang-hai Qi ◽

...

Keyword(s):

Feed Intake ◽

Egg Production ◽

Laying Hens ◽

Drug Effects ◽

Control Group ◽

Poultry Production ◽

Blank Control Group ◽

Organic Selenium ◽

Laying Performance ◽

Significant Difference

In the context of increasing awareness on the dietary supplementation of organic selenium in commercial poultry production and ensuring safe egg production, the present study investigated the effects of selenium on the pharmacokinetics of the therapeutic use of florfenicol and enrofloxacin from perspectives of laying performance, selenium deposition in eggs, and drug residue in plasma, organs, and eggs. A 2 × 3 factorial arrangement with two kinds of drugs (florfenicol vs. enrofloxacin, 200 mg/kg) and three levels of dietary organic selenium SCIP (selenium conjugated to insect protein) (0, 2, and 5 mg/kg) was designed together with a blank control group. Healthy Hy-Line Brown laying hens (n = 252, 40-week-old and 90.0 ± 1.7% of egg production rate) were randomly allocated into one of seven treatments with six replicates and six hens per replicate. The experiment lasted for 42 days and consisted of three periods (adjusted stage, depositional stage, and eliminating stage) of 14 days each. These stages entail feeding of the laying hens with basal diets, addition of drugs and selenium synchronously into the diets, drug withdrawal from diet, and supply of selenium uninterruptedly in the diet. Egg production and feed intake were recorded on daily and weekly bases, respectively. The selenium content in egg yolk, egg white, and whole eggs and the drug residues in eggs, plasma, liver, kidney, and breast muscle were determined on days 2, 3, 5, 6, 7, 9, 11, and 14 of the depositional and eliminating stages. There was no significant difference (p > 0.05) in egg production among the dietary treatments, but feed intake decreased significantly (p < 0.05) in the drug treatment group compared to other groups. Dietary organic selenium decreased the residue of drugs in tissues and eggs, while the metabolism and deposition of selenium in laying hens were suppressed due to drug effects. The results of the present study are of significance to enrich the knowledge of the pharmacokinetics of florfenicol and enrofloxacin in laying hens and ensure the quality of poultry products.

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